7210 ACD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7210 ACD/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.92 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
14738 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7210 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7210 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Extra Light (Class A) specifications, providing superior axial and radial stiffness while minimizing friction and heat generation. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and other high-precision machinery where stability under combined loads is critical.
7210 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7210 | Basic bearing series; 50 mm bore, 90 mm OD, 40 mm width. |
| AC | Angular Contact design with a 25° contact angle for handling combined radial and axial loads. |
| D | Duplex (two single bearings) arrangement. |
| DB | Back-to-Back mounting. This configuration provides high moment rigidity and excellent running accuracy. |
| P4A | Super Precision tolerance class, exceeding ABEC 7 standards, for applications requiring minimal runout and vibration. |
7210 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back duplex design creates a wide effective spread, significantly increasing system rigidity against moment loads and ensuring stable high-speed operation.
- Superior Load Capacity: The 25° contact angle is optimized to handle significant combined loads (radial and axial) simultaneously, a hallmark of high-performance angular contact ball bearings.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the P4A precision and controlled preload contribute to a high limiting speed of 46,000 rpm.
- Precision Engineering: Manufactured from chrome steel for both rings and balls, this bearing guarantees high durability and consistent performance. The tight dimensional tolerances on bore, OD, and width ensure perfect fit and alignment.
7210 ACD/P4ADBA Bearing Typical Application Areas
This bearing is engineered for the most demanding applications, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling heads requiring high precision and rigidity.
- High-Frequency Motors & Spindles: Used in applications where high rotational speeds and accuracy are paramount.
- Precision Robotic Drives: Provides the necessary stiffness and accuracy for robotic arm joints and rotary actuators.
- Medical & Dental Equipment: Critical components in high-speed handpieces and imaging device rotors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring ultra-precise rotation.
